Fix incorrect slider duration calculation.
Fix incorrect slider duration calculation.

naoey/osu,DrabWeb/osu,Drezi126/osu,theguii/osu,johnneijzen/osu,NeoAdonis/osu,peppy/osu,UselessToucan/osu,peppy/osu-new,NotKyon/lolisu,UselessToucan/osu,EVAST9919/osu,DrabWeb/osu,default0/osu,johnneijzen/osu,NeoAdonis/osu,UselessToucan/osu,peppy/osu,smoogipoo/osu,smoogipoo/osu,naoey/osu,peppy/osu,smoogipoo/osu,Damnae/osu,osu-RP/osu-RP,Frontear/osuKyzer,naoey/osu,tacchinotacchi/osu,nyaamara/osu,ppy/osu,Nabile-Rahmani/osu,ppy/osu,2yangk23/osu,NeoAdonis/osu,ZLima12/osu,RedNesto/osu,smoogipooo/osu,DrabWeb/osu,ppy/osu,ZLima12/osu,2yangk23/osu,EVAST9919/osu